A new velocimetry algorithm for optimizing ultrasonic PIV imaging method

Non-invasive measurement of the multiple velocity component of blood flow would be extremely useful for hemodynamic diagnosis of many cardiovascular problems such as athermoma, intimal hyperplasia, thrombus, and hemolysis. In recent years, Zheng et al. have developed a new ultrasound based velocimetry technique, termed echo particle image velocimetry (echo PIV) to measure the multiple velocity components. Based on the technique, we had optimize the velocimetry algorithm which is used for processing images and generating vectors, to improve the accuracy of the vectors and reduce computational cost of the algorithm.